I have only grown poppies in California, where I bought them as seedlings in cell packs. I suggest that you seperate them into cell packs now if they are an inch or two tall so they develop their roots
unhindered by neighbors. As far as the hollyhocks, they grow so tall that it is important that their base get as think as possible early on. Again seperate them into individual cells, iof they are not already, and make sure they are fairly cool...under 60 degrees is best so they grow more in width than in height right now. If they are too crowded and warm they'll stretch too much looking for the light. I hope this helps.
We grown most of our annuals from plugs which we buy wholesale in trays of 512 plants per tray. I really only start tomatoes, basil, parsley, and sunflowers from seed anymore.
GL!